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Form P121-10N
Black Plastic-Vinyl Chloride/Acetate Copolymer. Smooth Matte Surface - Plasticizer Free

Thickness: 10 mils (0.25 mm) - Size: 6-1/2 x 17 in (165 x 432 mm)
Used in ASTM D 2486, ASTM D 4213, ISO 11998 and Other Scrub Test Methods.

In a typical scrub test, the coating is applied to the Leneta Scrub Test Panel at a specified film thickness, allowed to dry, then subjected to scrubbing with a straight-line scrub tester. In ASTM D 2486, a 10 mil shim is inserted under the panel to accelerate failure and thereby reduce testing time. The scrub resistance is the number of scrub cycles required to remove the coating to a specified end point.

Alternatively, the loss in weight is determined after a specified number of scrub cycles as a measure of scrub resistance, with calculation of equivalent loss in film thickness.

ALSO AVAILABLE: WHITE SCRUB TEST PANELS - FORM P122-10N
Used with dark coloured paints for contrast. Same physical properties as Form P121-10N.

Calibration Scrub Test Panels

These are standard panels prepared by applying white emulsion paints on black scrub test panels. The films are indefinitely stable and the panels of each type essentially identical. They are used as controls in the measurement of scrub resistance, to obtain Calibration Ratings that normalize the wide variations often encountered for undefined reasons, among laboratories using the same scrub method. The Calibration Rating is the performance of the test paint panel expressed as a percentage relative to that of the selected Calibration Panel.

* Typical Values per ASTM D2486, Method A